Cho tam giác abc vuông tại a tính độ dài các cạnh ab ac biết 1) BS=1cm; sinB=3/5
2) BC=13cm; cosB=5/13
3) BC=2cm; tanB= căn 3
4) BC=41cm; cotB=9/14

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b? 1. define a variable for the situation. 2. write an inequality that represents the situation. 3.solve the inequality to find out how many months he needs to keep the website for site a to be less expensive than site b. 4. using words, describe how many months he needs to keep the website for site a to be less expensive than site b.

Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults. how many students and adults went if the ticket charge was $42.75

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2